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Author Question: How do the three position service valves differ from other valves? A) They have no closed ... (Read 90 times)

vHAUNG6011

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on: Jul 24, 2018
How do the three position service valves differ from other valves?
 
  A) They have no closed position. B) They are leakproof, if undamaged.
  C) They have multiple closed positions. D) They are spring-loaded.

Question 2

What is the refrigeration effect of a system if the liquid entering the evaporator has an enthalpy of 60 BTU/lb and the vapor leaving the evaporator has an enthalpy of 110 BTU/lb?
 
  A) 110 BTU/lb + 60 BTU/lb = 170 BTU/lb B) 110 BTU/lb/60 BTU/lb = 1.83 BTU/lb
  C) 110 BTU/lb - 60 BTU/lb = 50 BTU/lb D) 110 BTU/lb


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peilian

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Reply #1 on: Jul 24, 2018
Answer to Question 1

A

Answer to Question 2

C


vHAUNG6011

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Reply 2 on: Jul 24, 2018
Wow, this really help

vickyvicksss

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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